1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_SERVERS_CAMERA_CAMERA2_PROFRAMEPROCESSOR_H 18 #define ANDROID_SERVERS_CAMERA_CAMERA2_PROFRAMEPROCESSOR_H 19 20 #include <utils/Thread.h> 21 #include <utils/String16.h> 22 #include <utils/Vector.h> 23 #include <utils/KeyedVector.h> 24 #include <utils/List.h> 25 #include <camera/CameraMetadata.h> 26 #include <camera/CaptureResult.h> 27 28 namespace android { 29 30 class CameraDeviceBase; 31 32 namespace camera2 { 33 34 /* Output frame metadata processing thread. This thread waits for new 35 * frames from the device, and analyzes them as necessary. 36 */ 37 class FrameProcessorBase: public Thread { 38 public: 39 explicit FrameProcessorBase(wp<CameraDeviceBase> device); 40 virtual ~FrameProcessorBase(); 41 42 struct FilteredListener: virtual public RefBase { 43 virtual void onResultAvailable(const CaptureResult &result) = 0; 44 }; 45 46 // Register a listener for a range of IDs [minId, maxId). Multiple listeners 47 // can be listening to the same range. Registering the same listener with 48 // the same range of IDs has no effect. 49 // sendPartials controls whether partial results will be sent. 50 status_t registerListener(int32_t minId, int32_t maxId, 51 const wp<FilteredListener>& listener, 52 bool sendPartials = true); 53 status_t removeListener(int32_t minId, int32_t maxId, 54 const wp<FilteredListener>& listener); 55 56 void dump(int fd, const Vector<String16>& args); 57 protected: 58 static const nsecs_t kWaitDuration = 10000000; // 10 ms 59 wp<CameraDeviceBase> mDevice; 60 61 virtual bool threadLoop(); 62 63 Mutex mInputMutex; 64 Mutex mLastFrameMutex; 65 66 struct RangeListener { 67 int32_t minId; 68 int32_t maxId; 69 wp<FilteredListener> listener; 70 bool sendPartials; 71 }; 72 List<RangeListener> mRangeListeners; 73 74 // Number of partial result the HAL will potentially send. 75 int32_t mNumPartialResults; 76 77 void processNewFrames(const sp<CameraDeviceBase> &device); 78 79 virtual bool processSingleFrame(CaptureResult &result, 80 const sp<CameraDeviceBase> &device); 81 82 status_t processListeners(const CaptureResult &result, 83 const sp<CameraDeviceBase> &device); 84 85 CameraMetadata mLastFrame; 86 }; 87 88 89 }; //namespace camera2 90 }; //namespace android 91 92 #endif 93
